# Copyright (c) 2026 Emanuele Bellocchia
#
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# of this software and associated documentation files (the "Software"), to deal
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# furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included in
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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"""Module for Tron address encoding/decoding."""

# Imports
from typing import Any, Union

from typing_extensions import override

from bip_utils.addr.addr_dec_utils import AddrDecUtils
from bip_utils.addr.eth_addr import EthAddrConst, EthAddrDecoder, EthAddrEncoder
from bip_utils.addr.iaddr_decoder import IAddrDecoder
from bip_utils.addr.iaddr_encoder import IAddrEncoder
from bip_utils.base58 import Base58ChecksumError, Base58Decoder, Base58Encoder
from bip_utils.coin_conf import CoinsConf
from bip_utils.ecc import IPublicKey
from bip_utils.utils.misc import BytesUtils


class TrxAddrDecoder(IAddrDecoder):
    """
    Tron address decoder class.
    It allows the Tron address decoding.
    """

    @override
    @staticmethod
    def DecodeAddr(addr: str,
                   **kwargs: Any) -> bytes:
        """
        Decode a Tron address to bytes.

        Args:
            addr (str): Address string
            **kwargs  : Not used

        Returns:
            bytes: Public key hash bytes

        Raises:
            ValueError: If the address encoding is not valid
        """

        try:
            # Decode from base58
            addr_dec = Base58Decoder.CheckDecode(addr)
        except Base58ChecksumError as ex:
            raise ValueError("Invalid base58 checksum") from ex

        # Validate length
        AddrDecUtils.ValidateLength(addr_dec,
                                    (EthAddrConst.ADDR_LEN // 2) + len(CoinsConf.Tron.ParamByKey("addr_prefix")))
        # Validate and remove prefix
        addr_no_prefix = AddrDecUtils.ValidateAndRemovePrefix(addr_dec,
                                                              CoinsConf.Tron.ParamByKey("addr_prefix"))

        return EthAddrDecoder.DecodeAddr(
            CoinsConf.Ethereum.ParamByKey("addr_prefix") + BytesUtils.ToHexString(addr_no_prefix),
            skip_chksum_enc=True
        )


class TrxAddrEncoder(IAddrEncoder):
    """
    Tron address encoder class.
    It allows the Tron address encoding.
    """

    @override
    @staticmethod
    def EncodeKey(pub_key: Union[bytes, IPublicKey],
                  **kwargs: Any) -> str:
        """
        Encode a public key to Tron address.

        Args:
            pub_key (bytes or IPublicKey): Public key bytes or object
            **kwargs                     : Not used

        Returns:
            str: Address string

        Raises:
            ValueError: If the public key is not valid
            TypeError: If the public key is not secp256k1
        """

        # Get address in Ethereum format (remove "0x" at the beginning)
        eth_addr = EthAddrEncoder.EncodeKey(pub_key)[2:]
        # Add prefix and encode
        return Base58Encoder.CheckEncode(CoinsConf.Tron.ParamByKey("addr_prefix") + BytesUtils.FromHexString(eth_addr))


# Deprecated: only for compatibility, Encoder class shall be used instead
TrxAddr = TrxAddrEncoder